CSIR-Central Glass & Ceramic Research Institute
(A Unit of Council of Scientific and Industrial Research)

सीएसआईआर-केंद्रीय कांच और सिरेमिक अनुसंधान संस्थान
(वैज्ञानिक और औद्योगिक अनुसंधान परिषद की एक इकाई)
  
  
 
Dr. Somnath Bandyopadhyay
Senior Principal Scientist

Fiber Optics Laboratory
Fiber Optics and Photonics Division

Phone: (033) 24838083
FAX: +91-33-24730957
E-mail: somnath@cgcri.res.in

B.Sc. Honours (Physics), University of Calcutta
M.Sc. Tech. (Applied Physics), University of Calcutta
Ph.D. (Tech), University of Calcutta



Dr. Bandyopadhyay joined CGCRI in May 2002

Biography
Dr. Somnath Bandyopadhyay received M.Sc. Tech. degree in Applied Physics Calcutta University, Calcutta, India. He worked in the field of optical computing and pattern recognition leading to his Ph.D. degree from the same university. In 1998 he joined Central Scientific Instruments organization (CSIO), Chandigarh, a research institute of CSIR, India as a scientist and during his stay at CSIO developed systems like ‘Dispergraph’, an image processing based analytical instrument used in rubber industry and optical fiber based intrusion detection system. He is in Central Glass & Ceramic Research Institute (CGCRI), another Institute of the CSIR, since year 2002. He had a major role towards initiation of fiber Bragg grating (FBG) based activities at CGCRI. In these years his interests have been focused mainly in the field of optical fiber Bragg grating based components for communication and sensors application, sensor demodulation techniques using FBG based linear edge filters, design and development of Bragg grating based ‘gain flattening filters’ (GFF) for EDFA, development of swept wavelength fiber laser source for use in FBG based sensor system. His work at IPL, University of Sydney, jointly with Professor John Canning, had opened up a new avenue for developing FBG with ultra high temperature (>1000C) stability.

Research Interest
  • Application of FBG sensors for structural health monitoring in aerospace and civil engineering application, ultrasonic sensing for damage detection in structure, long period grating sensors with overlay structure for chemical and biological sensing applications, FBG for ultra high temperature application.

Professional Career
OrganisationDesignationsDuration
Central Scientific Instruments Organisation Scientist 1998-2002
Central Glass & Ceramic research Institute Scientist 2002-till date

Awards/Recognition
  • Awarded Monbusho fellowship of JSPS (1998).

  • Awarded C. V. Raman research fellowship of CSIR (2007).


Selected Publications
Summary: In SCI journals: 30, Conference proceedings: 35, Books/Monographs: 1;
Recent Publications:
  1. “A study of regenerated gratings produced in germanosilicate fibers by high temperature annealing,” S. Bandyopadhyay, J. Canning, P. Biswas, M. Stevenson and K. Dasgupta, Opt. Express, Vol. 19, No. 2, pp. 1198-1206, 17 January 2011.
  2. “Design optimization of fiber Bragg grating accelerometer for maximum sensitivity” Nandini Basumallick, Palas Biswas, Kamal Dasgupta and Somnath Bandyopadhyay, Sensors and Actuators A: Physical, Vol.194, pp. 31-39, 2013.
  3. “Characterization of LPGs via Correlation Analysis of an Analytical Solution With Observed Transmission Spectra,” Richard M. Carter, Robert R. J. Maier, Palas Biswas, Member, Somnath Bandyopadhyay, Nandini Basumallick, Benjamin J. S. Jones, Scott McCulloch, and James S. Barton, Journal of Lightwave Technology, Vol. 31, No. 18, pp. 3014-3020, Sept.15, 2013.
  4. "Towards Sensitive Label-Free Immunosensing by Means of Turn-Around-Point Long Period Fiber Gratings", F.Chiavaioli, P.Biswas , C.Trono, S.Bandyopadhyay, A.Giannetti, S.Tombelli, N. Basumallick, K.Dasgupta, F.Baldini, Biosensors and Bioelectronics, Vol. - 60 pp.305–310, 2014.
  5. "Response of Strongly Over-Coupled Resonant Mode of a Long Period Grating to High Refractive Index Ambiance", Palas Biswas, Nandini Basumallick, Kamal Dasgupta, and Somnath Bandyopadhyay, Journal of Lightwave Technology, Vol. 32, No. 11, pp 2072-2078, June 1, 2014.
  6. "Sensitivity Enhancement of Turn-Around-Point Long Period Gratings By Tuning Initial Coupling Condition", Palas Biswas, Nandini Basumallick, Sankhyabrata Bandyopadhyay, Kamal Dasgupta, Ajay Ghosh, and Somnath Bandyopadhyay, IEEE Sensors Journal, Digital Object Identifier 10.1109/JSEN.2014.2361166.

Patents filed / Granted
  1. “A New Multi-Fibre Optic 2D-Array Device for Sensing and Localising Environment Perturbation using Speckle Image Processing,” H K Sardana, J K Chhabra, S. Bandyopadhyay and P K Goel, US Patent 6,590,194 B2, 2003

Notable Research Contribution
  • Regenerated fiber gratings with ultra high temperature stability
  • Fiber grating based linear filters
  • Gain flattening filters for optical amplifiers
  • Fibre Bragg Grating (FBG) based temperature sensor for high voltage (400KV) power transmission lines.

PhD Supervision


Summary: 4



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